Introducing 

Prezi AI.

Your new presentation assistant.

Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.

Loading…
Transcript

In this presentation, we will be exploring the similarities and differences between the digestive systems of snakes and humans to discover just how alike they are.

Human or Snake?

Comparison of the Digestive System

That completes our tour of the digestive system! As you can see, humans and snakes are actually very similar when it comes to anatomy, even though they look so much different.

thinkstockphotos.co.uk

dialonepestcontrol.com

Works Cited

https://docs.google.com/document/d/1HkF6RK_gOO-OLW6ZuyChdxtfwMPErXImxDKYh9mu1eE/edit?usp=sharing

information:

photos:

https://docs.google.com/document/d/1SkLEqdTzCBtO40SAqT7ys77Ta78avNXElYWBLwObVaw/edit?usp=sharing

The digestive system is the process that turns food into nutrients that give living organisms energy for life as well as for growth and cell repair.

5

Small Intestine

Do humans have it, snakes have it, or both?

The three organs that help with digestion are the live, pancreas, and gall bladder. The liver detoxifies blood and makes bile, the pancreas makes digestive enzymes, and the gall bladder stores bile. Bile is a fluid that helps to break down fatty acids and aids in digestion.

HUMANS

newtonsapple.org.uk

shutterstock.com

augustanalutheran.ca

BOTH

SNAKES

projectdigestivesystem.weebly.com

findfunfacts.appspot.com

There's a lot that goes on in the small intestine. First, there are three different regions that you should know: the duodenum, jejunum, and ileum. In helping both the stomach and small intestine digest food, there are three different organs: the liver, pancreas, and gall bladder.

1

Mouth

Do humans have it, snakes have it, or both?

Rectum

One thing that humans do that snakes don't is chew their food. Humans have teeth made mostly of calcified tissue called dentine that is actually stronger than bone (Melina). Snakes, on the other hand, do have teeth but theirs are needle-like, and cannot really be used for chewing (Durso).

Do humans have it, snakes have it, or both?

Just by looking at the size difference between the two types of teeth reveals that one is more powerful than the other— humans' are more powerful than snakes'.

BOTH

SNAKES

HUMANS

Another thing that is vital to the digestive process is the existence of saliva. Both snakes and humans use saliva to eat. Saliva makes dry things that both animals eat soft and wet, and therefore easier to digest. Without it, humans and snakes would choke on a lot more types of food. Saliva is one of the things that aids snakes that eat large things whole.

snakesarelong.blogspot.com

medicalnewstoday.com

Another thing that is vital to the digestive process is the existence of saliva. Both snakes and humans use saliva to eat. Saliva makes dry things that both animals eat soft and wet, and therefore easier to digest. Without it, humans and snakes would choke on a lot more types of foods. Saliva is, in fact, on of the things that aids snakes who eat large things whole.

nipic.com

fineartamerica.com

The first stop on the digestive system for both humans and snakes is the mouth, which is a body part that they both possess. The mouth is where food enters the digestive system.

SNAKES

BOTH

HUMANS

buzzle.com

keyword-suggestions.com

The rectum is where stool, or feces, are held until they are ready to be released from the colon to the anus.

7

Large Intestine

Do humans have it, snakes have it, or both?

The large intestine connects the cecum (first part of large intestine) to the rectum (last part of large intestine). Waste left over from the digestive process is passed through the large intestine using contractions, or peristalsis as mentioned before.

BOTH

SNAKES

HUMANS

thinkstockphotos.co.uk

animals.howstuffworks.com

Both humans and snakes have large intestines, which, also known as the colon, absorbs water from unused waste and returns it to the blood.

6

Stomach

Do humans have it, snakes have it, or both?

The stomach doesn't only hold food during digestion, but it secretes acid and holds powerful enzymes that continue the process of digestion.

Before leaving the stomach, there's something that food needs to pass through called the pyloric valve, or sphincter. The pyloric sphincter helps to control the rate of digestion and the direction of chyme (the partly digested food) movement in the gastrointestinal tract (Taylor).

BOTH

SNAKES

HUMANS

4

blogs.scientificamerican.com

reelshub.com

The stomach is a very important part of the digestive process. It is an organ in which most of the digestion occurs.

2

Throat/Pharynx

Do humans have it, snakes have it, or both?

When food enters the mouth, it must travel down the throat to the esophagus, the next destination in the digestive system. At the end of the throat, however, there is something called the epiglottis. The epiglottis prevents food and/or liquid from going into the larynx. It "acts as a switch between the larynx and the esophagus to permit air to enter the airway to the lungs and food to pass into the gastrointestinal tract" (Taylor).

BOTH

SNAKES

HUMANS

wikipedia.com

clipart.me

From the mouth, food travels down the throat, also known as the pharynx (not to be confused with the larynx!)

3

Esophagus

Do humans have it, snakes have it, or both?

For both humans and snakes, the esophagus is a long tube that brings food from the throat to the stomach. To deliver food to the stomach, the body does something called peristalsis, which is a series of contractions.

HUMANS

In snakes, the esophagus can be half the length of the snake. The esophagus includes a number of internal folds, but snakes have more than other reptiles. This long esophagus allows them to eat such large organisms.

BOTH

SNAKES

tattoogen.com

webmd.com

The esophagus is where things start to get interesting. Both humans and snakes have an esophagus, but the esophagus is a little bit different in snakes.

8

Anus

Do humans have it, snakes have it, or both?

BOTH

SNAKES

HUMANS

The anus is the last destination for food in the digestive system. Here is where stool leaves the body. And even though it doesn't look it, snakes actually do have anuses.

Learn more about creating dynamic, engaging presentations with Prezi